SK500592018U1 - Arched high pressure inflatable beam - Google Patents

Abstract

The high-pressure inflatable beam (1) with a typical internal operating pressure in the range of 100 to 1000 kPa is made up of conventional or modified fire hoses or other industrial hoses or tubes manufactured by seamless weaving technology with an internal airtight lining and possible external protective coating. are closed by a closure, wherein the at least one closure comprises at least one inlet and / or discharge element of the filling medium, and the ends of the beam (1) are fixed at a distance less than the total length of the beam (1); a beam (1) provided with at least two adjacent fixed fixing points (2) located in the longitudinal direction of the beam (1) formed on the surface or sleeves (5) of the beam (1), the fixed fixing points (2) being interconnected by at least one force an element (3) whose straight length between the fixed bo The dmi (2) anchorage is shorter than the straight length of the plain beam (1) between these fixed anchorage points (2).

Description

Technical field

The technical solution relates to inflatable girders for ground structures, especially for the creation of temporary roofs such as tents, tunnels, podiums and other typical and atypical roofs, to create auxiliary structures for attaching and hanging equipment, to secure other fixed or inflatable structures against falling or as separate inflatable objects.

Prior art

High-pressure inflatable beams filled with air or inert gas, with a typical internal operating pressure in the range of 100 to 1000 kPa, are used as a supporting element of tents and temporary roofs, using conventional or modified fire or industrial hoses or other tubes made by technology as a structural element. seamless weaving with an internal airtight lining and possible surface treatment.

The use of fire hoses as beams of a roof structure is disclosed in EP 0810339. This solution makes it possible to create a temporary roofing by means of a structure comprising inflatable beams, preferably made of fire hoses. These hoses are connected at the ends to fixed support elements arranged in a row one behind the other. When creating an overlap of the space, fixed support elements are placed at the edges of the space to be covered, which at the same time serve as elements for the distribution of air to said hoses. Hoses are connected to these support elements at the respective ends, which, after inflation, form an arc or a bend between said support elements. a series of arches. The cover sheet is then attached to this row of arches. Said solution creates an arcuate overlap at the open ends (tunnel).

Document SK 6715 Y1 discloses a tent with an inflatable support structure which uses an inflatable beam formed from a standard fire or other industrial seamless hose with an outer textile braid, the hose being closed at each end by a plug, at least one of which contains an air filling or draining element. , and at least one end of the hose is attached or supported by the outer jacket of the tent or the floor portion of the tent. The use of standard fire or other industrial seamless hoses with outer textile braid and inner airtight liner allows for higher operating pressure without the need for pressure compensation by pressure relief valves. The shape and overall size of the supporting structure thus become defined and unchanged even in the event of pressure fluctuations caused by changes in the temperature or pressure of the external environment. Since the jacket and the floor part generally form a single unit, or the ends of the hose are anchored to the floor part, the hose is formed into a substantially arcuate shape when inflated, in particular according to a shape predefined by the adapted cut of the outer jacket and floor part.

The inflatable beams of EP 0810339 and SK 6715 Y1 preferably provide a sufficiently strong and stable support element to form the roofing of the surface in the form of tunnel or dome roofs or tents. The shape of the beam, and thus also the shape of the screed, is achieved by a fixed position of the elements - basic, in which the ends of the beam are attached, while after inflating the beam and spreading between the bases, a continuous arcuate shape is created, defined by the ratio of hose length. The profile of the arc can have a semi-arc or elliptical shape, depending on the stated ratio.

The disadvantage of the current state of the above-described roofing construction is practically the given arcuate shape of the inflatable beam. In this state, the application possibilities are then narrowed down where, for static or aesthetic reasons, a beam profile other than a continuous arc is required, where another object is to be copied or where better passability is required due to an unsuitable approach angle at the beam base.

The aim of this technical solution is to substantially eliminate the shortcomings of the prior art.

The essence of the technical solution

This goal is achieved by an arcuate high-pressure inflatable beam according to this technical solution, with a typical internal operating pressure in the range of 100 to 1000 kPa, formed from conventional or modified fire hoses or other industrial hoses or tubes made by seamless weaving technology with internal airtight lining and possible external a protective coating, the ends of which are closed by a closure, the at least one closure comprising at least one filling and / or discharging element of the filling medium, and the ends of the beam being fixed at a distance less than the total length of the beam. In one section of its length, the beam is provided with at least two adjacent fixed points of attachment, located in the longitudinal direction of the beam axis, formed on the surface of the beam, the fixed points of attachment being interconnected by at least one force

With K 50059-2018 U1 element, the straight length between the fixed attachment points is shorter than the straight length of the simple beam between these fixed attachment points.

The principle of the force element ensuring the change of the shape of the beam consists in the forcible shortening of the inner circumference of the arched beam. This is achieved by fixing two or more points of the beam circumference to a distance that is less than the original distance between the given points before fixation. Depending on the ratio of such contraction, the ratio of the distance between the circumferential yarns of the base fabric of the tube changes after the beam is inflated. On the outer circumference of the beam, the yarns remain spaced to the maximum distance allowed by the textile structure of the tube, while on the inner circumference of the beam the distances between the circumferential yarns of the base fabric of the tube decrease depending on the ratio and the force element. In the case of a strong contraction, not only the distance between the circumferential yarns is reduced, but only a fold is formed on the surface of the tube. Visually, depending on the retraction ratio of the force elements, the beam bends or bends at a given location of the force elements.

The fixed attachment points of the force element may be in the form of protrusions formed on the beam fabric during the weaving process of the hose or tube.

The fixed attachment points may also be in the form of locally added material on the surface of the hose or tube. This can be created by welding, sewing, gluing or other known technologies. The material thus added locally can also be around the entire circumference of the hose or tube in the form of a sleeve, which appears to be the most advantageous solution. Such a hose sleeve surrounds the outer circumference of the hose and may be formed of various suitable materials such as metal, plastic, fabric, composite and the like. It is possible to apply two separate sleeves interconnected by a force element. In the case of sleeves, it is possible for the force element to be formed by a continuous connection of the sleeves, which essentially forms one shaped sleeve with a preset bending angle.

This technical solution therefore requires at least one force element held at at least two points. In the case of placing a force element in the inner arc of the beam, mainly tensile forces act on the element. The material for forming the force element can thus be either a rigid shaped element made of materials such as metal, composite, plastic, wood and the like, or a tensile element made of materials such as textile, strap, rope, cord and the like. The solid shaped element is more advantageous for this purpose due to its better properties in absorbing the lateral forces acting at the bending point of the beam. In the case of placing force elements on the side of the beam, or on the outer arch of the beam, it is necessary to absorb tensile and compressive forces at the same time and it is assumed to use only solid materials capable of absorbing both types of forces.

With greater forces, resp. For larger beams, it is possible to advantageously use a combination of the location of the force elements on the beam, namely on the inner arch of the beam, and / or on the sides of the beam, and / or on the outer arch of the beam. One fixed shaped element or tensile element may be located in the inner arc of the beam, at least one, preferably a pair of fixed force elements may be located on the side of the beam and one force element may be located on the outer arc of the beam. The force element on the side of the beam and the outer arc of the beam has an angle corresponding to the angle of bending or bending of the beam. Of course, various other combinations of force element locations are also possible depending on the given design requirements for the purpose or location of the beam.

Each bend or bend of the beam requires its own force element or set of force elements. The resulting shape of the beam can be, for example, a combination of an arch with one bend in the middle, forming the profile of a Gothic arch, an arch with two bends on the sides, providing a sharper approach angle from its base and associated better internal passability, or a combination of several bends if it is for advantageous for the given application.

To improve the dimensional stability of the beam, it is possible to connect the attachment points of the force element or the force points formed elsewhere on the beam by a string.

Overview of figures in the drawings

The technical solution is explained in more detail in the attached drawings, where:

Fig. 1 schematically shows an arcuate high-pressure beam according to the prior art;

Fig. 2 schematically shows an arcuate high-pressure beam in one exemplary embodiment according to the technical solution with detail A of the embodiment of the bending or bending of the beam;

Fig. 3 schematically shows variants a, b, c, d, e, f, g, h, i of an exemplary embodiment of a fixed attachment point and a force element according to this technical solution;

Fig. 4 schematically shows variants a, b, c, d of examples of the location of a force element on a single or double hose or beam tube according to this technical solution;

Fig. 5 schematically shows variants a, b of embodiments of different beam shapes according to this technical solution;

S K 50059-2018 U1 fig. 6 shows an example of the use of a beam according to this technical solution for a tunnel-type tent.

Examples of embodiments

The arcuate high-pressure inflatable beam 1 according to this solution comprises one hose or tube made by seamless weaving technology with an inner airtight liner and an optional external protective coating. This hose or tube is provided at its ends with air seals.

Due to the nature of its symmetrical design, unless applied by lateral forces, the high-pressure inflatable hose or tube tends to maintain a straight shape after being inflated and pressurized to operating pressure. For the purpose of using high-pressure hoses or tubes as roofing beams, such as e.g. tents, etc., it is usual to use a longer hose or tube than the planned distance between the fixings of its ends - the base. As a result of the fixation of the base, the hose or tube is folded into a continuously arcuate shape, forming a particle circle or ehpsy, as shown in FIG. First

To change the shapes of this beam 1, as shown e.g. in FIG. 2, FIG. 5, and FIG. 6, at least two adjacent fixed attachment points 2 are formed on at least one section of the length of the beam 1. The points 2 are located in the longitudinal direction of the beam 1, and are formed on the surface or sleeves of the beam 1. The attachment points 2 are interconnected by at least one force element 3, the straight length of which, i. j. the direct distance, between the two points 2 of the attachment, is shorter than the direct length of the beam 1 between these points 2. The said straight length of the beam 1 means the length on the stretched resp. inflated straight beam 1, without application of said force element 3.

In the simple inflated state of the beam 1, t. j. In a state where the beam 1 is inflated without any external forces, the distance between the two fixed points 2 formed on the surface of the beam 1 is defined by the natural expansion of the hose or tube material and the internal pressure in the hose or tube acting on the tube walls. After blowing the beam 1 and installing the force element 3 interconnecting the fixed attachment points 2, and re-inflating it, deformation, bending, kinking of the beam 1 occurs directly proportional to the difference in length of the force element 3 and the distance between the fixed points 2 in the simple state of the beam 1. in the shape of a beam 1, from the prior art in FIG. 1, due to the application of the force elements 3, e.g. in FIG. 2 and FIG. 5th

In FIG. 3 schematically shows variants of embodiments of fixed attachment points 2, for example in the form of protrusions 6 formed during the process of weaving a hose or tube, FIG. 3; by means of an additional material 4 applied locally to the surface of the hose or tube, FIG. 3b. This additional material 4 can, for example, also take the form of sleeves 5 applied around the circumference of the hose or tube, FIG. 3c, d, e, f, g, h, i. The sleeves 5 can be continuously connected into one shaped sleeve 5, made of solid material, with a preset angle of bending or bending of the beam 1. The sleeve 5 thus also forms a force element 3. This embodiment is shown in FIG. 3d.

In FIG. 3 also shows variants of exemplary embodiments of the force element 3.

Variants a, b, c represent exemplary embodiments of a force element 3 located only on the inner arch of the beam 1. Variants a, b then show the force element 3 formed as a tension element, wherein the tension element can be made of materials such as fabric, strap, rope, cord and etc., or even from solid material such as metal, wood, hard plastic, etc. Variant e shows a force element 3 designed exclusively as a fixed shaped element. The force element 3 designed as a rigid shaped element can also be located on the outer arch of the beam 1 as shown by variant g.

Variant f represents an exemplary embodiment of a force element 3 formed as a fixed shaped element located on the side of the beam 1. In the case of placing a force element 3 on the side of the beam 1, symmetrical application of two such force elements 3 formed as a fixed shaped element is preferably assumed.

Variants h, i represent an exemplary embodiment of a combination of force elements 3 located on the inner arch of the beam 1 and at the same time on the side of the beam 1. Variant h shows a particular combination using a force element 3 on the inner arch of the beam 1, where the force element 3 is formed as a tension element. of soft or solid material and the force element 3 on the side of the beam 1 is formed as a solid shaped element. The variant also then shows in particular a combination where the force element 3 on the inner arc of the beam 1 is a fixed shaped element. By combining the force elements 3 as shown in the variant h, i in FIG. 3, it is possible to achieve better lateral stability of the beam 1, especially in the case of a free-standing beam 1, not coupled to another structure, system or wind

From FIG. 3, it is clear that the decisive parameter defining the bending or bending angle of the beam 1 is not the length of the force element 3 as such, but the direct distance between the two points 2 by which the straight or shaped force element 3 is attached to the fixed attachment points 2 of the beam 1.

The force elements 3 formed as solid shaped elements used on the sides or upper arch of the beam are shaped in accordance with a preset bending angle or bend of the beam 1. The material in this case is preferably bent metal strip, for application to the outer or inner arch of the nose.

S K 50059-2018 U1 ka 1, or cut, for application to the side of the beam 1, in a shape taking into account the required angle of bending or bending of the beam 1.

Fig. 4 schematically shows variants of examples of the location of the force element 3 on a single hose or tube, variants a, b, c, d, and double, variant e. Fig. 4, variants a, b, c, d are practically cross-sections of the beam 1 in place of the force element 3, from the respective variants in FIG. 3. The position of the force element 3 is shown schematically, i. j. only the position relative to the beam 1 is indicated, not the actual embodiment of the specific variant of the connecting element 3. Variant e shows a combination of force elements 3 located on the side of the beam 1, being a set of two coaxial hoses or tubes. In this variant, it is necessary for the force element 3 to be applied to each hose or tube.

Fig. 5 then shows a schematic view of variants a, b, of examples of different beam shapes achievable with this technical solution.

In FIG. 6 shows an exemplary use of a high-pressure inflatable beam 1 according to this technical solution as a tunnel-type tent beam, where the underpass at the longitudinal walls of the tent is improved.

The above examples are given by way of illustration only, without in any way limiting the scope of protection defined by the claims. It will be appreciated that by utilizing the principles set forth in this technical solution, it is possible to create a large number of embodiments and applications of a bent or bent high pressure inflatable beam other than those described as specific exemplary uses of the beam according to this technical solution. These further embodiments and applications result in particular from various other possible combinations of positions and the number of force elements 3 on the beam 1.

The arched high-pressure inflatable beam 1 according to this technical solution thus provides various shape possibilities of the beam 1 and the associated possibilities of application in places where the continuous arched beam appears to be insufficient or unsatisfactory.

Claims (13)

CLAIMS FOR PROTECTION 1. An arched high-pressure inflatable beam with a typical internal operating pressure in the range of 100 to 1 000 kPa, made of conventional or modified fire hoses or other industrial hoses or tubes made by seamless weaving technology with an internal airtight liner and any external protective coating, the ends of which are closed by a closure, the at least one closure comprising at least one filling and / or discharging element of the filling medium, and the ends of the beam are fixed at a distance less than the total length of the beam, characterized in that the beam (1) is at least one section of its length. ) provided with at least two adjacent fixed attachment points (2) located in the longitudinal direction of the beam (1) formed on the surface of the beam (1), the fixed attachment points (2) being interconnected by at least one force element (3) whose straight length between fixed stabbing (2) the attachment is shorter than the straight length of the simple beam (1) between these fixed attachment points (2). Arched high-pressure inflatable beam according to claim 1, characterized in that the fixed attachment points (2) are in the form of protrusions (6) formed on the fabric of the beam (1) during the process of weaving the hose or tube. The arched high-pressure inflatable beam according to claim 1, characterized in that the fixed attachment points (2) are in the form of a locally added material (4) applied to the surface of the hose or tube. Arched high-pressure inflatable beam according to claim 3, characterized in that the locally added material (4) is applied to the surface of the hose or tubes in the form of sleeves (5) of the beam (1). Arched high-pressure inflatable beam according to Claim 4, characterized in that the sleeves (5) are continuously connected into one shaped sleeve with a preset bending angle. Arched high-pressure inflatable beam according to any one of claims 1 to 5, characterized in that the fixed attachment points (2) and the force element (3) are located on the inner arch of the beam (1). Arched high-pressure inflatable beam according to Claim 6, characterized in that the force element (3) is a rigid shaped element or a tensile element. Arched high-pressure inflatable beam according to any one of claims 1 to 5, characterized in that the fixed attachment points (2) and the force element (3) are located on the sides of the beam (1). Arched high-pressure inflatable beam according to Claim 8, characterized in that the force element (3) is a rigid shaped element which has an angle corresponding to the angle of bending or bending of the beam (1). Arched high-pressure inflatable beam according to any one of claims 1 to 5, characterized in that the fixed attachment points (2) and the force element (3) are located on the outer arch of the beam (1). Arched high-pressure inflatable beam according to Claim 10, characterized in that the force element (3) is a rigid shaped element which has an angle corresponding to the angle of bending or bending of the beam (1). Arched high-pressure inflatable beam according to any one of claims 1 to 5, characterized in that the fixed attachment points (2) and the force element (3) are located on the inner arch of the beam (1), and / or at least one side of the beam (1), and / or on the outer arch of the beam (1). Arched high-pressure inflatable beam according to Claim 12, characterized in that the force element (3) on the inner arch of the beam (1) is a rigid shaped element or a tensile element, the force element (3) on the side of the beam (2) is a fixed shaped element , which has an angle corresponding to the bending or bending angle of the beam (1), and the force element (3) on the outer arc of the beam (1) is a solid shaped element which has an angle corresponding to the bending or bending angle of the beam (1).